Weight Units

Attogram [ ag ]

Attogram (ag) is a unit of weight equal to 1/1 000 000 000 000 000 000 000 (1E-21) kilograms. This unit is a combination of the metric prefix atto (a) and the SI unit of weight gram (g).

Carat [ ct ]

Carat [international] is a unit of mass used for diamonds and other precious stones. Originally, it spelled as karat, it comes from the Greek keration. The international carat is equal to 200 milligrams.

Centigram [ cg ]

Centigram is a metric unit of mass. It is equal to 10 milligrams or about 0.154 grain.

Decigram [ dg ]

Decigram is a metric unit of mass. It is equal to 100 milligrams or about 1.5432 grains.

Dekagram [ dag ]

Dekagram is a common metric unit of mass. It is frequently used in European food recipes. It is equal to 10 grams, 0.01 kilogram or 0.352 739 66 ounce.

Dram [ dram ]

The dram was historically both a coin and a weight. It refers both to a unit of mass in the Apothecaries system of weights and a unit of volume in the imperial system.

Exagram [ Eg ]

Exagram (Eg) is a unit of weight equalt to 1 000 000 000 000 000 (1E+15) kilograms. This unit is a combination of the metric prefix exa (E) and the SI unit of weight gram (g).

Femtogram [ fg ]

Femtogram (fg) is a unit of weight equal to 1/1 000 000 000 000 000 000 (1E-18) kilograms. This unit is a combination of the metric prefix femto (f) and the SI unit of weight gram (g).

Gigagram [ Gg ]

Gigagram (Gg) is a unit of weight equal to 1 000 000 (1E+6) kilograms. This unit is a combination of the metric prefix giga (G) and the SI unit of weight gram (g).

Grain [ gr ]

Grain is a traditional unit of weight. It is equal to 64.798 91 milligrams.

Gram [ g ]

Gram is a unit of mass in the metric system. This unit name comes from the Greek gramma. (The kilogram, rather than the gram, is considered the base unit of mass in the SI.) Gram is a small mass, equal to about 15.432 grains or 0.035 273 966 ounce. The original French spelling is gramme.